Machine for making hollow bricks.



I. W. BRISON, 6a' J. A. HUNTER.

MACHINE POR MAKING- HOLLOW BBIGKS.

APLIGATION FILED APB.. 25. 1910.

Patented Ja.11.17,.1911.

3 SHEETS-SHEET 1.

INVENTRS' Y WITNEs'sEs.

- Kulm@ Lw. BRISON an JLA. HUNTER.

MACHINE POB. MAKING HOLLOW BBIOKS.

` APPLICATION FILED AER 25. 19101 Patented Jan. 17, 1911. Y

a SHEETS-SHEET 2.

IIHIIIHH l WM I. W. BRIlsoNazgJ. A. HUNTER. t MACHINE FOB.. MAKING HOLLOW BRIGKS. 4 APP-LIOATIOH YILED APB.. 25. 1910. l 981,839 Patented Jan.17,1911.

B 3 BHEETEr-SHEET 3.'

FIG. ,a

wrrNE'ssss. V

, i @L www UNiTnD srafrps PATENT OFFICE.

IRA W. BRISON, OF ASPINWALL, AND JAMES A. HUNTER, OF MONONGAHELA, :PENN-L SYLVANIA.

MACHINE FOR MAKING HOLLQW BRICKS.

Application filed April 25, 1910.

To all whom it may concern:

Be it known that we, IRA lV. Biusoiv, a resident of Aspinwall, in the county of Allegheny and State of Pennsylvania, and JAMES A. HUNTER, a resident of Monongahela and State of Pennsylvania, have invented a new and useful Improvement in Machines for Making Hollow Bricks; and we do hereby declare the following to be a full, clear, and exact description thereof.

Our invention relates to machines for making hollow brick, and more especially suoli special shapes made from fire brick as are employed for nozzles, sleeves, stroppers, etc., in connection with the manufacture of steel.

The object of our invention is to provide a machine of this character with increased capacity in which the parts are readily ad justed for bricks of different sizes, sp tha't the machine may be quickly changed without the removal of any of the parts for brick of different sizes, while at the same time the bricks are formed accurately and with smooth, regular bores.

To these ends our invention comprises the novel features hereinafter set forth and claimed.

In the accompanying drawings, Figure 1 is a front elevation of our improved machine; Fig. 2 is a side elevation of same; Fig. 3 is an enlarged sectional View showing the parts in the position of molding the brick; and Fig. 4 is a plan view of the moldsupporting frame. Fig. 5 is a detail.

Referring to the drawings, the numeral 2 designates a suitable frame-work formed of I-beains properly braced and united to give a structure of the requisite strength. Upon this frame 2 is the platform 3 upon which the operator may stand. Frame 2 is pro vided with the vertical Lbeams 4 which form the guides for the yoke or frame 6 which carries the mold 7. A plate 8 is secured to the yoke 6 by the screws 9 and said plate has the opening 10 formed therein coinciding with the opening 11 in the frame 6. A ring 12 rests in an annular recess in the' late 8.

- The plate 8 has upwardly extending ugs 14 by means of which the mold is centered on the plate 8 and adjusting screws 15 pass through said lugs to engage the outer face of the mold 7 In this manner the mold is securely clam ed in place.

A stripper-block 16 is secured to the rods 17 which pass through the slotted openings Specification of Letters Patent.

Patented Jan. 17, 1911.

Serial No. 557,476.

' 13 in the ring 12, and at the lower end of the rod 17 is the plate 18. By having the slotted opening 13 different sized stripperblocks may be employed to suit the different molds. The stripper-block 16 is provided with the opening 19 through which the core 2O passes. The core 20 is secured to the threaded stud 21 on rod 23. The plate 22 is secured to the lower end of the threaded rod 23. This rod 23 passes up through a bushing 24 in the upper cross-frame 25 and secured to the threaded rod 23 above said cross-frame is the pinion 26. The rod 23 is provided with the groove 27 with which a feather on the pinion 26 is adapted to engage. The pinion 28 engages the pinion 26, said pinion 28 being secured to the shaft 29 which rotates in suitable bearing 30. The outer end of the shaft 29 is provided with the pulley 31 which rrlay be connected to any suitable source of power.

The hand-wheels 32 and 33 are mounted on the rod 23, said hand-wheels having split hubs 34 with the bolts 35 passing through the same for tightening said hand-wheels securely on the rod 23. The purpose of these handles 32 and 33 is to provide for the adjustment of the rod 23, it being apparent that by loosening the handle and rotatin the same so as to raise it above the hub o the pinion 26 and then rotating the wheel 32, the rod 23 may be fed downwardly or by the reverse operation, namely, loosening the hand wheel and operating the hand-wheel 33, said rod may be raised for the purpose fully hereinafter set forth.

To provide for the raising and lowering of the yoke or frame 6, the pitnien 38 are secured to the ends of the yoke 6 and said pitmen connected at their opposite ends t( J the wrist-pins 39 on the gear-wheels f4() mounted on the shaft 40a. The gear-wlids 40 mesh with the pinions 41 on the .CJ-haft 42 and on said shaft 42 is' the gearwheel 43 which meshes with the pinion 44: on the shaft 45. At the outer ends of ghe Shaft 45 are the pulleys 46 which may be Connected up to any suitable source of power, In this manner a reciprocating movement is im arted to the yoke or frame 6 said yoke being raised to the position indicated in dotted lines Fig. l on its upper stroke. Secured to .the shaft 40a are the weights 40b which act to counterbalance the frame 0r yoke 6. As the yoke asccnds the weight acts to raise said yokestcadily and without jamming while at the same time it also lowers said yoke in the saine manner. By mounting the eight in this manner the racking oi" the machine is avoided and the speed of the machine may be increased.

Secured to the frame 2 is the cross-beam 4S to which is secured the arm i9 in the path ol the plate lli? or' the stripper.

`When our improved machine is in operation in the nmnuiactnre oi hollow-brick, the mold of the proper size and shape is secured to the mold-plate and the core ot proper size and shape isalso secured to the rod 28, said rod having been adjusted in proper position by means of the hand-wheels 32 or 33. r1`he operator standing on the platform 3 which the brick is to be made into the mold, and as the mold rises, being carried up on the frame G by the action of the pit-man 38, said mold will be brought up into the position indicated in Fig. 3, the rotating core 2O remaining stationary. The plastic material contained within the mold will be displaced by the core and distributed in t-he mold in such a way as to conform to the mold-cavity which is controlled by the shape of the core, the'strippingblock 16 and the plate 22. When the brick is formed in this way the yoke G withdraws from the rotating core whichtends to prevent the sticking of the material to the core and leaves a smooth even bore. As the mold .descends the stripper carried by the yoke 6 moves with its plate 18 in contact witli'the arni49, Where# upon the stripper-block is raised and themold acts to eject the brick therefrom so that when the yoke 6 reaches its lowermost posi tion, the bric-k will be resting on the block in position on top of the mold where the oper'- ator can readily remove the same. The mold is charged with another supply of the plastic material and the operation above described is repeated. In case it is desired to make brick shorter or greater length than the brick shown in the drawings the screw rod 23 maybe readintrodnces the plastic material from.

ily raised or lowered by the hand-wheels 32 or 33, so that when the proper size of core is screwed thereto the said core will be in proper position with reference to the movement of the yoke 6 so as to form the article properly within the mold. rlhis adj ustment may be made to a great degree of accuracy, so that a perfect brick is insured and the adj nstment may be accomplished so conveniently as to require but little time in the making of such adjustment, there being no need of removing any of the parts. This is a great point of advantage and makes the machine adaptable for all different sizes of brick without anylabor other than the mere turning of the hand-wheels to adjust the screw-rod 23.

What We claim is:

l. In machines for making hollow brick, the combination with a suitable fra-me, of a reciprocating frame, a mold carried thereby, a stationary cross-beam at the upper end of said "frame, a rotary screw-rod eX- tending through said cross-beam, means for rotating said screw-rod, a core secured to said screw-rod, and hand wheels -above and below said cross-beam for raising and lowering said screw-rod..

2. In machines for making hollow brick, the combi-nation with a suitable frame, of a reciprocating frame, a mold carried thereby, a stationary cross-beam at the upper end of saidframe', a rotary screw-rod passing through said cross-beam,- a pinion engaging said screw-rod, means for driving said pinion, a hand wheel above said pinion engagmg said screw-rod, a hand wheel below said cross-beam, and a core secured to said screwrod.

In testimony whereof, We the said IRA W. BR'IsoN and JAMES' A. HUNTER have hereunto set our hands.

IRA W.'BRISON.

JAMES A. HUNTER.

Witnesses:

Ro'r. D. To'r'rEN, JOHN F. WILL. 

